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Dioxidobis(pentane-2,4-dionato-?O,O')(pyridine-4-carbaldehyde oxime-?N)uranium(VI).

ABSTRACT: The title compound, [U(C(5)H(7)O(2))(2)O(2)(C(6)H(6)N(2)O)], exhibits a penta-gonal-bipyramidal coordination geometry around the U(VI) atom, involving two bidentate acetyl-acetonate ions and the pyridine ring of the pyridine-4-carbaldehyde oxime ligand. Hydrogen bonds exist between the OH group of the pyridine-4-carbaldehyde oxime ligand and the two O atoms of the acetyl-acetonate ions.

SUBMITTER: Kawasaki T

PROVIDER: S-EPMC2961597 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature

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Dioxidobis(pentane-2,4-dionato-κO,O')(pyridine-4-carbaldehyde oxime-κN)uranium(VI).

Kawasaki Takeshi T Kitazawa Takafumi T

Acta crystallographica. Section E, Structure reports online 20080510 Pt 6

The title compound, [U(C(5)H(7)O(2))(2)O(2)(C(6)H(6)N(2)O)], exhibits a penta-gonal-bipyramidal coordination geometry around the U(VI) atom, involving two bidentate acetyl-acetonate ions and the pyridine ring of the pyridine-4-carbaldehyde oxime ligand. Hydrogen bonds exist between the OH group of the pyridine-4-carbaldehyde oxime ligand and the two O atoms of the acetyl-acetonate ions. ...[more]

PMID: 21202477

Similar Datasets

Aqua-dioxidobis(pentane-2,4-dionato)uranium(VI) pyrazine solvate.

Project description:The asymmetric unit of the title compound, [U(C(5)H(7)O(2))(2)O(2)(H(2)O)]·C(4)H(4)N(2), contains one [UO(2)(acac)(2)(H(2)O)] (where acac is acetyl-acetonate) and two half-mol-ecules of pyrazine. It exhibits a UO(7) penta-gonal-bipyramidal coordination geometry about the U(VI) atom, involving two bidentate acetyl-acetonate ions and one water mol-ecule. The N atoms of the pyrazine mol-ecules are not coordinated to the U(VI) atom, and are connected with the aqua O atom by hydrogen bonds. This results in a zigzag chain arrangement along the [10] direction.

| S-EPMC2961248 | biostudies-literature

Crystal structure of dioxidobis(pentane-2,4-dionato-κ(2) O,O')[1-phenyl-3-(pyridin-4-yl)propane-κN]uranium(VI).

Project description:In the title compound, [UO2(C5H7O2)2(C14H15N)], the uran-yl(VI) unit ([O=U=O](2+)) is coordinated to two acetyl-acetonate (acac) anions and one 1-phenyl-3-(pyridin-4-yl)propane (ppp) mol-ecule. The geometry around the U atom is UNO6 penta-gonal-bipyramidal; two uran-yl(VI) O atoms are located at the axial positions, whereas four O atoms from two chelating bidentate acac ligands and one N atom of a ppp ligand form the equatorial plane.

| S-EPMC4331861 | biostudies-literature

Crystal structure of a trigonal polymorph of aqua-dioxidobis(pentane-2,4-dionato-κ2 O,O')uranium(VI).

Project description:The title compound, [UO2(acac)2(H2O)] consists of a uran-yl(VI) unit ([O=U=O]2+) coordinated to two monoanionic acetyl-acetonate (acac, C5H7O2) ligands and one water mol-ecule. The asymmetric unit includes a one-half of a uranium atom, one oxido ion, one-half of a water mol-ecule and one acac ligand. The coordination about the uranium atom is distorted penta-gonal-bipyramidal. The acac ligands and Ow atom comprise the equatorial plane, while the uranyl O atoms occupy the axial positions. Inter-molecular hydrogen bonding between complexes results in the formation of two-dimensional hexa-gonal void channels along the c-axis direction with a diameter of 6.7 Å. The monoclinic (P21/c space group) polymorph was reported by Alcock & Flanders [(1987). Acta Cryst. C43, 1480-1483].

| S-EPMC8739209 | biostudies-literature

Bis[μ-pentane-2,4-dionato(1-)]bis-{aqua-[1,1,1,5,5,5-hexa-fluoro-pentane-2,4-dionato(1-)]cobalt(II)}.

Project description:The title complex, [Co(2)(C(5)HF(6)O(2))(2)(C(5)H(7)O(2))(2)(H(2)O)(2)], is centrosymmetric with a crystallographic inversion center in the middle of the mol-ecule. The octa-hedrally coordinated Co(II) atoms are bridged by two chelating acetyl-acetonate (acac) ligands and two more electron-poor 1,1,1,5,5,5-hexa-fluoro-pentane-2,4-dionato (hfac) ligands are bonded terminally in a solely chelating manner. The coordinated water mol-ecules form inter-molecular O-H⋯O hydrogen bonds with electron-rich acac O atoms of neighboring mol-ecules, leading to strings of mol-ecules along the a axis.

| S-EPMC2971008 | biostudies-literature

Pyridinium tetra-kis-(1,1,1-trifluoro-pentane-2,4-dionato)dysprosate.

Project description:In the anion of the title compound, (C(5)H(6)N)[Dy(C(5)H(4)F(3)O(2))(4)], the central metal ion, Dy(3+), is coordinated by four bidentate 1,1,1-trifluoro-pentane-2,4-dionate (TAA) ligands, forming an approximate square-anti-prismatic configuration. The pyridin-ium cation is connected to the complex ion by an N-H?O hydrogen bond and electrostatic inter-actions in the crystal. There are two kinds of disorder in the structure, one involving rotational disorder of a CF(3) group [occupancy ratio 0.560?(15):0.440?(15)] and the other involving an exchange between a CF(3) group and CH(3) group within a given bidentate ligand (occupancy ratio 0.64:0.36).

| S-EPMC3052034 | biostudies-literature

Tris(3-chloro-pentane-2,4-dionato-?(2)O,O')aluminium.

Project description:In the title compound, [Al(C(5)H(6)ClO(2))(3)], the Al(III) cation is situated on a twofold rotation axis and is coordinated by six O atoms from three 3-chloro-pentane-2,4-dionate ligands in an octa-hedral environment. Al-O bond lengths are in the range 1.8741?(14)-1.8772?(14)?Å. In the crystal, mol-ecules are linked via C-H?Cl contacts.

| S-EPMC3379131 | biostudies-literature

Tris(3-nitro-pentane-2,4-dionato-?O,O')-cobalt(III).

Project description:The structure of the title compound, [Co(C(5)H(6)NO(4))(3)], consists of a Co(III) ion octahedrally coordinated by three bidentate 3-nitro-pentane-2,4-dionate ligands. The complex was prepared via the nitration of tris-(2,4-penta-nedionato-?(2)O,O')cobalt(III) with a solution of copper(II) nitrate in glacial acetic acid. The central C atom and the nitro group of one 3-nitro-pentane-2,4-dionate ligand are disordered over two positions with an occupancy ratio of 0.848?(4):0.152?(4). A second nitro group is also disordered over two orientations with an occupancy ratio of 0.892?(7):0.108?(7). Two of the ligand methyl groups form C-H?O inter-actions with two different nitro groups to form chains running along the c axis. Additional C-H?O inter-actions are found between ligand methyl groups and the cobalt-bound O atoms, also resulting in the formation of chains along the c axis.

| S-EPMC3297263 | biostudies-literature

Chlorido(pyridine-2-carbaldehyde oximato-κN,N')(pyridine-2-carbaldehyde oxime-κN,N')copper(II).

Project description:In the title compound, [Cu(C(6)H(5)N(2)O)Cl(C(6)H(6)N(2)O)], the Cu atom is coordinated by one neutral and one deprotonated pyridine-2-carboxaldehyde oxime (pco) ligand, resulting in the formation of two five-membered CuN(2)C(2) rings. Together with the additional coordinating chloride anion, the coordination polyhedron of copper is best described as a distorted square-pyramid, the distortion parameter being 0.288. The two organic ligands are linked by an intramolecular O-H⋯O hydrogen bond.

| S-EPMC2961395 | biostudies-literature

Bis(μ-4-phenyl-pyridine N-oxide-κO:O)bis-[bis-(1,1,1,5,5,5-hexa-fluoro-pentane-2,4-dionato)copper(II)].

Project description:The asymmetric unit of the title compound, [Cu(2)(C(5)HF(6)O(2))(4)(C(11)H(9)NO)(2)], contains one half of the centrosymmetric dinuclear complex. The coordination geometry of the Cu(II) atom is octa-hedral, exhibiting a typical Jahn-Teller distortion. One trifluoro-methyl group is rotationally disordered between two orientations in a 1:1 ratio.

| S-EPMC3006976 | biostudies-literature

Tris(3-chloro-pentane-2,4-dionato-?(2)O,O')iron(III).

Project description:In the title compound, [Fe(C(5)H(6)ClO(2))(3)], the Fe(III) cation is situated on a twofold rotation axis and is coordinated by six O atoms from three 3-chloro-pentane-2,4-dionate ligands in a slightly distorted octa-hedral environment. Fe-O bond lengths are in the range 1.9818?(18)-1.9957?(18)?Å. The trans O-Fe-O angles are 169.06?(13) and 171.54?(8)°, whereas the corresponding cis angles are in the range 84.81?(10)-100.68?(12)°. In the crystal, mol-ecules are linked via C-H?Cl inter-actions.

| S-EPMC3379132 | biostudies-literature

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